Water enters through minute pores (ostia) in the body wall into a central cavity (spongocoel), from where it exits through the osculum.
A água entra por poros minúsculos (óstios) na parede do corpo, em uma cavidade central (espongocela), e sai pelo ósculo.
| Text | Water enters through minute pores (ostia) in the body wall into a central cavity, spongocoel, from where it goes out through the osculum. |
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